Method of processing indigo-dyed fabric and indigo-dyed fabric processed by the method

Abstract

The present invention provides a processing method for an indigo-dyed cloth which makes it possible add to the cloth a vintage color that is equivalent to the vintage color of an indigo-dyed cloth that has been actually preserved or used for a long time, and is also less susceptible to disappearance even by a washing process and the like, in a comparatively short period of time, and an indigo-dyed cloth to which such a vintage color is added The present invention relates to the processing method for an indigo-dyed cloth in which a nitrogen-based oxidizing agent is applied to an indigo-dyed cloth and the resulting cloth is subjected to a heating process, and also relates to an indigo-dyed cloth processed by the method.

1 - 3 . (canceled)  
   
   
       4 . A processing method for an indigo-dyed cloth comprising the steps of: 
 applying a nitrogen-based oxidizing agent to an indigo-dyed cloth; and    subjecting the resulting cloth to a heating process.    
   
   
       5 . The processing method for an indigo-dyed cloth according to  claim 4 , wherein with respect to the nitrogen-based oxidizing agent, one or more kinds of materials selected from the group consisting of nitrate of heavy metal, nitric acid, ammonium nitrate and nitrite of alkali metal are used in the form of an aqueous solution.  
   
   
       6 . The processing method for an indigo-dyed cloth according to  claim 4 , wherein with respect to the nitrogen-based oxidizing agent, one or more kinds of materials selected from the group consisting of zinc nitrate and ammonium nitrate are used in the form of an aqueous solution.  
   
   
       7 . An indigo-dyed cloth processed by a method disclosed in any one of  claims 4  to  6 .